listBSDDriveNames.swift

import Foundation

func getDriveBSDNames() -> [String] {
    var iterator: io_iterator_t = 0

    let matching: CFDictionary = IOServiceMatching(kIOServicePlane)

    // Use 'kIOMasterPortDefault' for macOS older than 12.0 Monterey
    IOServiceGetMatchingServices(kIOMainPortDefault, matching, &iterator)
    
    return sequence(state: iterator, next: { i in IOIteratorNext(i) })
        .prefix(while: { child in child > 0 })
        .compactMap { child in
            guard let bsdNameAnyObject = IORegistryEntryCreateCFProperty(
                child, "BSD Name" as CFString,
                kCFAllocatorDefault,
                IOOptionBits(kIORegistryIterateRecursively)) else { return nil }
                
            guard let bsdNameString = bsdNameAnyObject.takeRetainedValue() as? String else { return nil }
            guard bsdNameString.starts(with: "disk") else { return nil }
            
            return bsdNameString
        }
}

print(getDriveBSDNames())